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From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: balbi@kernel.org, agross@kernel.org, gregkh@linuxfoundation.org,
	jackp@codeaurora.org, wcheng@codeaurora.org,
	linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH 2/3] usb: dwc3: Add role switch relay support
Date: Wed, 7 Jul 2021 10:49:45 +0100	[thread overview]
Message-ID: <51a11204-cd59-e18f-7dc3-f78632e77bde@linaro.org> (raw)
In-Reply-To: <YOU4Tqol/CPzHNwM@yoga>

On 07/07/2021 06:14, Bjorn Andersson wrote:
> So you're going to rely on DT to create a role-switch link between the
> dwc3 core driver and the qcom wrapper?
> 
> As I said the other day, this is just a hack to get around the fact that
> of_platform_populate() may return before the dwc3 core has probed.

A beautiful hack though

> Another such case can be seen in [1], where Wesley is patching the DT
> node in runtime in order to pass a boolean parameter between the two
> driver parts.
> 
> If we fix that we don't need these kinds of workarounds.

OK, I understand/agree

Lets look at changing the way dwc3-qcom launches dwc3-core and make it that

1. Probe deferral in dwc3-core either defers the dwc3-qcom code
2. Or that the dwc3-qcom code waits for dwc3-core

either way instead of avoiding the fact that dwc3-core can defer we 
should make it that dwc3-qcom::probe() exits only when the dwc3-core is done

---
bod

  reply	other threads:[~2021-07-07  9:47 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-04  1:33 [PATCH 0/3] Implement role-switch notifications from dwc3-drd to dwc3-qcom Bryan O'Donoghue
2021-07-04  1:33 ` [PATCH 1/3] usb: dwc3: dwc3-qcom: Fix typo in the dwc3 vbus override API Bryan O'Donoghue
2021-07-07  5:06   ` Bjorn Andersson
2021-07-04  1:33 ` [PATCH 2/3] usb: dwc3: Add role switch relay support Bryan O'Donoghue
2021-07-06  2:51   ` Peter Chen
2021-07-06 10:07     ` Bryan O'Donoghue
2021-07-07  5:14   ` Bjorn Andersson
2021-07-07  9:49     ` Bryan O'Donoghue [this message]
2021-07-07  9:51       ` Bryan O'Donoghue
2021-07-04  1:33 ` [PATCH 3/3] usb: dwc3: dwc3-qcom: Make dwc3-qcom a role-switch signal recipient Bryan O'Donoghue
2021-07-07  1:57 ` [PATCH 0/3] Implement role-switch notifications from dwc3-drd to dwc3-qcom Peter Chen
2021-07-07 19:03   ` Bjorn Andersson
2021-07-08  3:06     ` Peter Chen
2021-07-08  3:54       ` Bjorn Andersson
2021-07-08 10:17         ` Bryan O'Donoghue
2021-08-24 23:52           ` Bjorn Andersson
2021-08-24 23:58             ` Bryan O'Donoghue
2021-08-25  0:01               ` Bjorn Andersson
2021-08-25  0:17                 ` Bryan O'Donoghue
2021-08-24 23:37       ` Bjorn Andersson
2021-08-25  5:51         ` Felipe Balbi
2021-08-25  8:18           ` Bryan O'Donoghue
2021-08-25 15:53             ` Bjorn Andersson
2021-08-25 16:43               ` Heikki Krogerus
2021-08-25 17:04                 ` Bjorn Andersson
2021-08-25 17:59               ` Bryan O'Donoghue
2021-08-25 20:06                 ` Bjorn Andersson
2021-08-26  6:15                   ` Felipe Balbi
2021-09-15 13:53                     ` Bjorn Andersson
2021-09-17 12:33                       ` Heikki Krogerus
2021-08-25 20:11                 ` Dmitry Baryshkov
2021-08-25 12:12           ` Rob Herring
2021-08-25 15:20             ` Felipe Balbi
2021-08-25 13:16           ` Bjorn Andersson
2021-08-25 15:22             ` Felipe Balbi
2021-08-25 16:33               ` Bjorn Andersson

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